Old viaduct over the canyon of Loa river (built in 1899, 104 meters high), in Conchi town. The FCAB train of mineral concentrate (two EMD GL26C-2 and EMD GR12 completely refurbished and repowered), passes through former Conchi station, teeing a rail detour to the mine "El Abra". Note the creek and canyon of Loa river, formerly the train passed through this gorge by this viaduct.